package Algorithm.recursion;

/**
 * @Author zengxianlong
 * @Date 2021/11/22 13:57
 * @Version 1.0
 */
  class B  extends A {
    B() throws Exception{
       try {

       }catch (Exception e){
          throw e;
       }
      System.out.print("B");
   }

   public static void main(String[] args) {
      System.out.println("0000");

   }

}
